Hi Miles, the ones on the first picture look like Armillaria solidipes / ostoyae (
honey fungus), but I would need to see them also from the top to be sure. With the other two I'm not familiar.
Armillarias are edible, but have to be boiled in
water shortly, before they can be fried or pickled in vinegar. Although the taste is not first
class, they can be great because of the large amounts of mushrooms one can find in a small area on neighboring
trees and stumps.
Uwe